如何在swift中处理推送通知？

Question

我有一个ios应用程序,我使用apns发送推送.我需要处理推送消息,如果正确则显示消息.我怎样才能迅速实现它？这是我的代码:

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions:
    [NSObject: AnyObject]?) -> Bool {
    registerForPushNotifications(application)
    return true
}

func registerForPushNotifications(application: UIApplication) {
    let notificationSettings = UIUserNotificationSettings(
        forTypes: [.Badge, .Sound, .Alert], categories: nil)
    application.registerUserNotificationSettings(notificationSettings)
}

func application(application: UIApplication, didRegisterUserNotificationSettings notificationSettings: UIUserNotificationSettings) {
    if notificationSettings.types != .None {
        application.registerForRemoteNotifications()
    }
}

func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
    let tokenChars = UnsafePointer<CChar>(deviceToken.bytes)
    var tokenString = ""

    for i in 0..<deviceToken.length {
        tokenString += String(format: "%02.2hhx", arguments: [tokenChars[i]])
    }

    print("Device Token:", tokenString)
}

func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError) {
    print("Failed to register:", error)
}

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {



}

func application(application: UIApplication, didReceiveLocalNotification notification: UILocalNotification) {

}

func applicationDidBecomeActive(application: UIApplication) {
    UIApplication.sharedApplication().applicationIconBadgeNumber = 0
}

在什么功能我可以处理推送通知？

Answer 1

到达你的iOS应用程序时处理推送通知是一个棘手的部分,以充分利用它.

当推送通知到达时,您的应用程序可以进入

关闭状态 - 应用程序被杀死,运行状态 - 应用程序处于前台,暂停状态 - 应用程序处于后台,

到达时处理推送通知

让我们逐一讨论如何在每个州处理它们

封闭状态:

当应用程序关闭(某些其他应用程序正在运行或手机被锁定)时,推送通知到达,您点击它以打开应用程序.将控制appDelegate’s方法即didFinishLaunchingWithOptions:请注意,当您通常通过从手机中点按其图标来启动应用程序时.didFinishLaunchingWithOptions:首先使用launchOptions == nil调用.如果您通过单击收到的推送通知启动应用程序didFinishLaunchingWithOptions:使用其调用launchOptions!=nil.关键点如果你想在点击推送通知启动应用程序时做一些特别的事情,你需要在你的代码中添加代码didFinishLaunchingWithOptions:

像这样

if (launchOptions != nil)
{
   //do some thing special e.g. display particular ViewController or Set some notification badge value.
}

运行状态

如果您的应用程序正在运行(在前台)并且收到推送通知,则屏幕上将不显示与该通知相关的任何内容 - 没有警报,没有消息,没有声音.而是将调用appDelegate的跟随方法

   func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
}

您可以根据需要实现此方法,以便您希望如何响应通知.

暂停状态

如果您的应用程序处于后台(手机已锁定或某些其他应用程序正在运行)并且已收到推送通知,则会显示声音通知,并且点击该通知应用程序将启动以下appDelegate方法被调用

    func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
}

与在运行状态下收到通知时调用的相同.请注意,通过使用UIApplication的applicationState属性,您始终可以在此方法中找到您的应用是否从背景状态唤醒.在这种情况下,您可以通过推送通知从后台打开应用程序时执行一些特殊操作.